WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Driver Seat Belt Switch Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 2: Passenger Seat Belt Switch Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 3: Passenger Seat Belt Warning Lamp Connector End View
Courtesy of GENERAL MOTORS CORP.
Fig 4: Passenger Seat Occupant Detection Sensor Connector End View